PrimeGrid
Please visit donation page to help the project cover running costs for this month

Toggle Menu

Join PrimeGrid

Returning Participants

Community

Leader Boards

Results

Other

drummers-lowrise

Advanced search

Message boards : Sophie Germain Prime Search : max k sieved for n = 1290000?

Author Message
Profile BurProject donor
Volunteer tester
Avatar
Send message
Joined: 25 Feb 20
Posts: 461
ID: 1241833
Credit: 278,749,731
RAC: 674,321
321 LLR Ruby: Earned 2,000,000 credits (2,092,823)Cullen LLR Amethyst: Earned 1,000,000 credits (1,846,629)ESP LLR Amethyst: Earned 1,000,000 credits (1,445,099)Generalized Cullen/Woodall LLR Ruby: Earned 2,000,000 credits (2,180,764)PPS LLR Amethyst: Earned 1,000,000 credits (1,225,852)PSP LLR Ruby: Earned 2,000,000 credits (2,064,832)SoB LLR Amethyst: Earned 1,000,000 credits (1,669,219)SR5 LLR Ruby: Earned 2,000,000 credits (2,065,004)SGS LLR Amethyst: Earned 1,000,000 credits (1,202,156)TRP LLR Ruby: Earned 2,000,000 credits (2,089,856)Woodall LLR Ruby: Earned 2,000,000 credits (2,112,258)321 Sieve (suspended) Ruby: Earned 2,000,000 credits (2,107,153)PPS Sieve Turquoise: Earned 5,000,000 credits (5,012,677)AP 26/27 Ruby: Earned 2,000,000 credits (3,731,689)GFN Turquoise: Earned 5,000,000 credits (7,489,336)WW Double Silver: Earned 200,000,000 credits (239,400,000)PSA Amethyst: Earned 1,000,000 credits (1,022,470)
Message 148966 - Posted: 23 Feb 2021 | 14:34:01 UTC

The old n = 6666xx range has apparently been sieved up to k = 41T, is it the same for the current n = 1290000?
____________
1281979 * 2^485014 + 1 is prime ... no further hits up to: n = 4,800,000

Profile Michael GoetzProject donor
Volunteer moderator
Project administrator
Avatar
Send message
Joined: 21 Jan 10
Posts: 13648
ID: 53948
Credit: 285,191,726
RAC: 51,135
The "Shut up already!" badge:  This loud mouth has mansplained on the forums over 10 thousand times!  Sheesh!!!Discovered the World's First GFN-19 prime!!!Discovered 1 mega primeFound 1 prime in the 2018 Tour de PrimesFound 1 prime in the 2019 Tour de PrimesFound 1 prime in the 2020 Tour de PrimesFound 2 primes in the 2021 Tour de Primes321 LLR Turquoise: Earned 5,000,000 credits (5,132,712)Cullen LLR Turquoise: Earned 5,000,000 credits (5,038,114)ESP LLR Turquoise: Earned 5,000,000 credits (6,177,890)Generalized Cullen/Woodall LLR Ruby: Earned 2,000,000 credits (2,213,410)PPS LLR Sapphire: Earned 20,000,000 credits (20,751,038)PSP LLR Turquoise: Earned 5,000,000 credits (7,956,186)SoB LLR Sapphire: Earned 20,000,000 credits (36,067,618)SR5 LLR Jade: Earned 10,000,000 credits (10,007,110)SGS LLR Ruby: Earned 2,000,000 credits (3,718,606)TRP LLR Turquoise: Earned 5,000,000 credits (5,084,329)Woodall LLR Ruby: Earned 2,000,000 credits (4,982,922)321 Sieve (suspended) Jade: Earned 10,000,000 credits (10,061,196)Cullen/Woodall Sieve (suspended) Ruby: Earned 2,000,000 credits (4,170,256)Generalized Cullen/Woodall Sieve (suspended) Turquoise: Earned 5,000,000 credits (5,059,304)PPS Sieve Sapphire: Earned 20,000,000 credits (22,885,121)Sierpinski (ESP/PSP/SoB) Sieve (suspended) Amethyst: Earned 1,000,000 credits (1,035,522)TRP Sieve (suspended) Ruby: Earned 2,000,000 credits (2,051,121)AP 26/27 Jade: Earned 10,000,000 credits (10,118,303)GFN Emerald: Earned 50,000,000 credits (78,031,938)WW Sapphire: Earned 20,000,000 credits (32,204,000)PSA Jade: Earned 10,000,000 credits (12,445,029)
Message 148968 - Posted: 23 Feb 2021 | 15:24:47 UTC - in response to Message 148966.

The old n = 6666xx range has apparently been sieved up to k = 41T, is it the same for the current n = 1290000?


10T
____________
My lucky number is 75898524288+1

Profile dannyridel
Volunteer tester
Avatar
Send message
Joined: 3 Feb 19
Posts: 919
ID: 1097922
Credit: 20,029,649
RAC: 25,310
Discovered 1 mega prime321 LLR Gold: Earned 500,000 credits (506,806)Cullen LLR Silver: Earned 100,000 credits (112,212)ESP LLR Silver: Earned 100,000 credits (255,803)Generalized Cullen/Woodall LLR Gold: Earned 500,000 credits (509,419)PPS LLR Ruby: Earned 2,000,000 credits (2,001,172)PSP LLR Gold: Earned 500,000 credits (616,940)SoB LLR Gold: Earned 500,000 credits (533,625)SR5 LLR Silver: Earned 100,000 credits (108,281)SGS LLR Gold: Earned 500,000 credits (501,474)TRP LLR Silver: Earned 100,000 credits (146,999)Woodall LLR Silver: Earned 100,000 credits (117,864)321 Sieve (suspended) Gold: Earned 500,000 credits (506,814)Generalized Cullen/Woodall Sieve (suspended) Bronze: Earned 10,000 credits (30,033)PPS Sieve Ruby: Earned 2,000,000 credits (2,808,043)AP 26/27 Amethyst: Earned 1,000,000 credits (1,273,545)GFN Ruby: Earned 2,000,000 credits (3,479,584)WW Turquoise: Earned 5,000,000 credits (6,148,000)PSA Silver: Earned 100,000 credits (373,034)
Message 148969 - Posted: 23 Feb 2021 | 16:39:56 UTC - in response to Message 148968.

The old n = 6666xx range has apparently been sieved up to k = 41T, is it the same for the current n = 1290000?


10T

Meaning that we're almost 60% done with this n. So what will happen next to the project?
____________
SHSIDElectronicsGroup@outlook.com

waiting for a TdP prime...
Proth "SoB": 44243*2^440969+1


Yves Gallot
Volunteer developer
Project scientist
Send message
Joined: 19 Aug 12
Posts: 672
ID: 164101
Credit: 305,042,960
RAC: 0
GFN Double Silver: Earned 200,000,000 credits (305,042,960)
Message 148970 - Posted: 23 Feb 2021 | 17:09:56 UTC - in response to Message 148969.

Meaning that we're almost 60% done with this n. So what will happen next to the project?

I can't reply to this question but the mega twin & mega Sophie Germain search already started. See exponent 3321910 on T5K.

Profile JeppeSNProject donor
Avatar
Send message
Joined: 5 Apr 14
Posts: 1533
ID: 306875
Credit: 35,601,589
RAC: 10,222
Found 1 prime in the 2020 Tour de Primes321 LLR Gold: Earned 500,000 credits (529,293)Cullen LLR Gold: Earned 500,000 credits (611,298)ESP LLR Silver: Earned 100,000 credits (174,818)Generalized Cullen/Woodall LLR Bronze: Earned 10,000 credits (35,236)PPS LLR Jade: Earned 10,000,000 credits (13,135,235)PSP LLR Silver: Earned 100,000 credits (428,457)SoB LLR Silver: Earned 100,000 credits (466,812)SR5 LLR Silver: Earned 100,000 credits (145,419)SGS LLR Silver: Earned 100,000 credits (112,277)TRP LLR Silver: Earned 100,000 credits (342,501)Woodall LLR Silver: Earned 100,000 credits (109,455)321 Sieve (suspended) Silver: Earned 100,000 credits (175,037)PPS Sieve Bronze: Earned 10,000 credits (10,113)AP 26/27 Bronze: Earned 10,000 credits (12,129)GFN Ruby: Earned 2,000,000 credits (2,059,478)WW Turquoise: Earned 5,000,000 credits (9,640,000)PSA Turquoise: Earned 5,000,000 credits (7,614,290)
Message 148975 - Posted: 23 Feb 2021 | 22:45:47 UTC - in response to Message 148970.

Meaning that we're almost 60% done with this n. So what will happen next to the project?

I can't reply to this question but the mega twin & mega Sophie Germain search already started. See exponent 3321910 on T5K.

See something*2^3321910 - 1 on Top 5000.

Note that this appears to search for twins only, not for Sophie Germain. For example they have the prime 4288198767*2^3321910 - 1. But the number 4288198767*2^3321909 - 1 has very small factors (13, 19, 103, 461, 79201), and also 4288198767*2^3321911 - 1 has that (5, 11, 2715899). This shows that the people who sieved this, did not sieve for Sophie Germain and safe primes.

But 4288198767*2^3321910 + 1 has no small factors. And the same is true for the other primes in the search. This indicates that they did sieve for twin primes.

/JeppeSN

Profile robishProject donor
Volunteer moderator
Volunteer tester
Avatar
Send message
Joined: 7 Jan 12
Posts: 1992
ID: 126266
Credit: 5,861,834,385
RAC: 2,572,975
Discovered the World's First AP27!!!Discovered 9 mega primesDiscovered 1 AP272018 Tour de Primes largest primeFound 4 primes in the 2018 Tour de PrimesFound 1 mega prime in the 2018 Tour de PrimesFound 1 prime in the 2019 Tour de PrimesFound 1 prime in the 2020 Tour de PrimesFound 1 prime in the 2021 Tour de Primes321 LLR Turquoise: Earned 5,000,000 credits (9,681,253)Cullen LLR Sapphire: Earned 20,000,000 credits (46,627,058)ESP LLR Turquoise: Earned 5,000,000 credits (8,577,288)Generalized Cullen/Woodall LLR Turquoise: Earned 5,000,000 credits (9,950,938)PPS LLR Emerald: Earned 50,000,000 credits (81,462,474)PSP LLR Turquoise: Earned 5,000,000 credits (9,600,575)SoB LLR Sapphire: Earned 20,000,000 credits (36,846,875)SR5 LLR Turquoise: Earned 5,000,000 credits (9,986,029)SGS LLR Turquoise: Earned 5,000,000 credits (5,658,541)TRP LLR Sapphire: Earned 20,000,000 credits (28,889,840)Woodall LLR Turquoise: Earned 5,000,000 credits (5,062,771)321 Sieve (suspended) Turquoise: Earned 5,000,000 credits (7,141,753)Cullen/Woodall Sieve (suspended) Turquoise: Earned 5,000,000 credits (7,892,369)Generalized Cullen/Woodall Sieve (suspended) Turquoise: Earned 5,000,000 credits (5,515,338)PPS Sieve Double Gold: Earned 500,000,000 credits (842,736,516)TRP Sieve (suspended) Silver: Earned 100,000 credits (121,416)AP 26/27 Emerald: Earned 50,000,000 credits (93,931,019)GFN Double Ruby: Earned 2,000,000,000 credits (4,556,256,999)WW Emerald: Earned 50,000,000 credits (96,052,000)
Message 148977 - Posted: 23 Feb 2021 | 23:23:58 UTC

Cool analysis Jeppe!

Here's another one for your analysis 239378138685 · 2^3321891+1 please :)
____________
My lucky numbers 10590941048576+1 and 224584605939537911+81292139*23#*n for n=0..26

Profile Michael GoetzProject donor
Volunteer moderator
Project administrator
Avatar
Send message
Joined: 21 Jan 10
Posts: 13648
ID: 53948
Credit: 285,191,726
RAC: 51,135
The "Shut up already!" badge:  This loud mouth has mansplained on the forums over 10 thousand times!  Sheesh!!!Discovered the World's First GFN-19 prime!!!Discovered 1 mega primeFound 1 prime in the 2018 Tour de PrimesFound 1 prime in the 2019 Tour de PrimesFound 1 prime in the 2020 Tour de PrimesFound 2 primes in the 2021 Tour de Primes321 LLR Turquoise: Earned 5,000,000 credits (5,132,712)Cullen LLR Turquoise: Earned 5,000,000 credits (5,038,114)ESP LLR Turquoise: Earned 5,000,000 credits (6,177,890)Generalized Cullen/Woodall LLR Ruby: Earned 2,000,000 credits (2,213,410)PPS LLR Sapphire: Earned 20,000,000 credits (20,751,038)PSP LLR Turquoise: Earned 5,000,000 credits (7,956,186)SoB LLR Sapphire: Earned 20,000,000 credits (36,067,618)SR5 LLR Jade: Earned 10,000,000 credits (10,007,110)SGS LLR Ruby: Earned 2,000,000 credits (3,718,606)TRP LLR Turquoise: Earned 5,000,000 credits (5,084,329)Woodall LLR Ruby: Earned 2,000,000 credits (4,982,922)321 Sieve (suspended) Jade: Earned 10,000,000 credits (10,061,196)Cullen/Woodall Sieve (suspended) Ruby: Earned 2,000,000 credits (4,170,256)Generalized Cullen/Woodall Sieve (suspended) Turquoise: Earned 5,000,000 credits (5,059,304)PPS Sieve Sapphire: Earned 20,000,000 credits (22,885,121)Sierpinski (ESP/PSP/SoB) Sieve (suspended) Amethyst: Earned 1,000,000 credits (1,035,522)TRP Sieve (suspended) Ruby: Earned 2,000,000 credits (2,051,121)AP 26/27 Jade: Earned 10,000,000 credits (10,118,303)GFN Emerald: Earned 50,000,000 credits (78,031,938)WW Sapphire: Earned 20,000,000 credits (32,204,000)PSA Jade: Earned 10,000,000 credits (12,445,029)
Message 148979 - Posted: 24 Feb 2021 | 2:06:22 UTC - in response to Message 148969.
Last modified: 24 Feb 2021 | 2:06:50 UTC

The old n = 6666xx range has apparently been sieved up to k = 41T, is it the same for the current n = 1290000?


10T

Meaning that we're almost 60% done with this n. So what will happen next to the project?


Which also means that we're barely above 50% after many years of work -- a large portion of which was during the time when SGS was a lot more appealing because the primes were reportable to T5K. I suggest you wait until you get a degree from a 4 year university, and then come back and ask the question again. That's about the right timeframe to be thinking about what comes next.

We've been working on this exponent for more than 8 years, and there's quite a few years to go.
____________
My lucky number is 75898524288+1

Profile vaughanProject donor
Send message
Joined: 11 Aug 05
Posts: 263
ID: 224
Credit: 6,335,986,923
RAC: 1,689,822
Discovered 8 mega primesFound 12 primes in the 2018 Tour de PrimesFound 1 mega prime in the 2018 Tour de PrimesFound 6 primes in the 2019 Tour de PrimesFound 7 primes in the 2020 Tour de PrimesFound 2 mega primes in the 2020 Tour de PrimesFound 1 prime in the 2020 Tour de Primes Mountain StageFound 16 primes in the 2021 Tour de PrimesFound 2 mega primes in the 2021 Tour de PrimesFound 2 primes in the 2021 Tour de Primes Mountain Stage321 LLR Sapphire: Earned 20,000,000 credits (36,740,570)Cullen LLR Emerald: Earned 50,000,000 credits (53,564,865)ESP LLR Sapphire: Earned 20,000,000 credits (41,654,113)Generalized Cullen/Woodall LLR Sapphire: Earned 20,000,000 credits (30,835,287)PPS LLR Double Silver: Earned 200,000,000 credits (211,238,555)PSP LLR Double Bronze: Earned 100,000,000 credits (139,883,108)SoB LLR Emerald: Earned 50,000,000 credits (79,824,750)SR5 LLR Emerald: Earned 50,000,000 credits (63,842,551)SGS LLR Double Bronze: Earned 100,000,000 credits (103,369,205)TPS LLR (retired) Bronze: Earned 10,000 credits (76,266)TRP LLR Emerald: Earned 50,000,000 credits (71,577,312)Woodall LLR Emerald: Earned 50,000,000 credits (51,747,294)321 Sieve (suspended) Double Silver: Earned 200,000,000 credits (205,512,337)Cullen/Woodall Sieve (suspended) Sapphire: Earned 20,000,000 credits (35,459,921)Generalized Cullen/Woodall Sieve (suspended) Double Bronze: Earned 100,000,000 credits (103,015,099)PPS Sieve Double Ruby: Earned 2,000,000,000 credits (3,518,135,225)Sierpinski (ESP/PSP/SoB) Sieve (suspended) Jade: Earned 10,000,000 credits (11,101,054)TRP Sieve (suspended) Sapphire: Earned 20,000,000 credits (25,930,215)AP 26/27 Double Silver: Earned 200,000,000 credits (270,755,818)GFN Double Gold: Earned 500,000,000 credits (609,219,168)WW Double Gold: Earned 500,000,000 credits (570,100,000)PSA Double Bronze: Earned 100,000,000 credits (102,293,265)
Message 148987 - Posted: 24 Feb 2021 | 10:21:30 UTC

Maybe a % completed like we have in the Fermat Divisor Search thread. Sophie Germain might need 0.1% increments in the announcements :)
____________

Profile Crun-chiProject donor
Volunteer tester
Avatar
Send message
Joined: 25 Nov 09
Posts: 3069
ID: 50683
Credit: 63,378,402
RAC: 486
Eliminated 1 conjecture "k"Found 1 prime in the 2018 Tour de PrimesFound 1 prime in the 2019 Tour de PrimesFound 1 prime in the 2020 Tour de PrimesFound 1 prime in the 2021 Tour de Primes321 LLR Silver: Earned 100,000 credits (229,492)Cullen LLR Silver: Earned 100,000 credits (110,733)PPS LLR Jade: Earned 10,000,000 credits (11,335,374)PSP LLR Silver: Earned 100,000 credits (104,385)SoB LLR Silver: Earned 100,000 credits (106,117)SR5 LLR Silver: Earned 100,000 credits (139,802)SGS LLR Amethyst: Earned 1,000,000 credits (1,325,207)TRP LLR Gold: Earned 500,000 credits (626,755)Woodall LLR Silver: Earned 100,000 credits (122,944)321 Sieve (suspended) Silver: Earned 100,000 credits (104,900)Cullen/Woodall Sieve (suspended) Ruby: Earned 2,000,000 credits (2,000,599)Generalized Cullen/Woodall Sieve (suspended) Gold: Earned 500,000 credits (515,556)PPS Sieve Jade: Earned 10,000,000 credits (11,872,830)TRP Sieve (suspended) Silver: Earned 100,000 credits (255,612)AP 26/27 Ruby: Earned 2,000,000 credits (2,583,960)GFN Sapphire: Earned 20,000,000 credits (23,334,026)WW Amethyst: Earned 1,000,000 credits (1,088,000)PSA Turquoise: Earned 5,000,000 credits (7,522,050)
Message 148988 - Posted: 24 Feb 2021 | 10:24:43 UTC - in response to Message 148975.
Last modified: 24 Feb 2021 | 10:39:39 UTC

Meaning that we're almost 60% done with this n. So what will happen next to the project?

I can't reply to this question but the mega twin & mega Sophie Germain search already started. See exponent 3321910 on T5K.

See something*2^3321910 - 1 on Top 5000.

Note that this appears to search for twins only, not for Sophie Germain. For example they have the prime 4288198767*2^3321910 - 1. But the number 4288198767*2^3321909 - 1 has very small factors (13, 19, 103, 461, 79201), and also 4288198767*2^3321911 - 1 has that (5, 11, 2715899). This shows that the people who sieved this, did not sieve for Sophie Germain and safe primes.

But 4288198767*2^3321910 + 1 has no small factors. And the same is true for the other primes in the search. This indicates that they did sieve for twin primes.

/JeppeSN


Nice project: everyone can try this :)
With quick sieving and predicted number of removing factors that person process around 66k candidates before first prime is found. And I expect he did sieve for at least month , and on many cores,so maybe 5K candidates less until first prime.
____________
92*10^1439761-1 NEAR-REPDIGIT PRIME :) :) :)
4 * 650^498101-1 CRUS PRIME
314187728^131072+1 GENERALIZED FERMAT
Proud member of team Aggie The Pew. Go Aggie!

Profile Michael GoetzProject donor
Volunteer moderator
Project administrator
Avatar
Send message
Joined: 21 Jan 10
Posts: 13648
ID: 53948
Credit: 285,191,726
RAC: 51,135
The "Shut up already!" badge:  This loud mouth has mansplained on the forums over 10 thousand times!  Sheesh!!!Discovered the World's First GFN-19 prime!!!Discovered 1 mega primeFound 1 prime in the 2018 Tour de PrimesFound 1 prime in the 2019 Tour de PrimesFound 1 prime in the 2020 Tour de PrimesFound 2 primes in the 2021 Tour de Primes321 LLR Turquoise: Earned 5,000,000 credits (5,132,712)Cullen LLR Turquoise: Earned 5,000,000 credits (5,038,114)ESP LLR Turquoise: Earned 5,000,000 credits (6,177,890)Generalized Cullen/Woodall LLR Ruby: Earned 2,000,000 credits (2,213,410)PPS LLR Sapphire: Earned 20,000,000 credits (20,751,038)PSP LLR Turquoise: Earned 5,000,000 credits (7,956,186)SoB LLR Sapphire: Earned 20,000,000 credits (36,067,618)SR5 LLR Jade: Earned 10,000,000 credits (10,007,110)SGS LLR Ruby: Earned 2,000,000 credits (3,718,606)TRP LLR Turquoise: Earned 5,000,000 credits (5,084,329)Woodall LLR Ruby: Earned 2,000,000 credits (4,982,922)321 Sieve (suspended) Jade: Earned 10,000,000 credits (10,061,196)Cullen/Woodall Sieve (suspended) Ruby: Earned 2,000,000 credits (4,170,256)Generalized Cullen/Woodall Sieve (suspended) Turquoise: Earned 5,000,000 credits (5,059,304)PPS Sieve Sapphire: Earned 20,000,000 credits (22,885,121)Sierpinski (ESP/PSP/SoB) Sieve (suspended) Amethyst: Earned 1,000,000 credits (1,035,522)TRP Sieve (suspended) Ruby: Earned 2,000,000 credits (2,051,121)AP 26/27 Jade: Earned 10,000,000 credits (10,118,303)GFN Emerald: Earned 50,000,000 credits (78,031,938)WW Sapphire: Earned 20,000,000 credits (32,204,000)PSA Jade: Earned 10,000,000 credits (12,445,029)
Message 148992 - Posted: 24 Feb 2021 | 13:51:56 UTC - in response to Message 148987.

Maybe a % completed like we have in the Fermat Divisor Search thread. Sophie Germain might need 0.1% increments in the announcements :)


I'm actually working on something new that you would like. It's much easier to post images on Discord, so I won't do it here, but I did post a preview of an early version on our Discord server.

If you don't want to go to Discord, look at the second section of our server status page where we have 5 bars that show how much disk space is used on our servers. Now imagine about 30 of those bars, showing how far along each of the sub projects is.

Cheap ASCII-art version...
321 XXXX---------- Cullen XXXXXXXXX----- ESP XXXX---------- DIV XXXXXXXXXXXXX-

____________
My lucky number is 75898524288+1

Profile JeppeSNProject donor
Avatar
Send message
Joined: 5 Apr 14
Posts: 1533
ID: 306875
Credit: 35,601,589
RAC: 10,222
Found 1 prime in the 2020 Tour de Primes321 LLR Gold: Earned 500,000 credits (529,293)Cullen LLR Gold: Earned 500,000 credits (611,298)ESP LLR Silver: Earned 100,000 credits (174,818)Generalized Cullen/Woodall LLR Bronze: Earned 10,000 credits (35,236)PPS LLR Jade: Earned 10,000,000 credits (13,135,235)PSP LLR Silver: Earned 100,000 credits (428,457)SoB LLR Silver: Earned 100,000 credits (466,812)SR5 LLR Silver: Earned 100,000 credits (145,419)SGS LLR Silver: Earned 100,000 credits (112,277)TRP LLR Silver: Earned 100,000 credits (342,501)Woodall LLR Silver: Earned 100,000 credits (109,455)321 Sieve (suspended) Silver: Earned 100,000 credits (175,037)PPS Sieve Bronze: Earned 10,000 credits (10,113)AP 26/27 Bronze: Earned 10,000 credits (12,129)GFN Ruby: Earned 2,000,000 credits (2,059,478)WW Turquoise: Earned 5,000,000 credits (9,640,000)PSA Turquoise: Earned 5,000,000 credits (7,614,290)
Message 148999 - Posted: 24 Feb 2021 | 19:46:04 UTC - in response to Message 148977.

Cool analysis Jeppe!

Here's another one for your analysis 239378138685 · 2^3321891+1 please :)

Nice one!

239378138685*2^3321891-1: no very small factors
239378138685*2^3321890+1: no very small factors
239378138685*2^3321892+1: no very small factors

So this could be because you sieved a "quadsieve" for both twin, Cunningham chain of the 2nd kind upwards and downwards. Cool.

239378138685*2^3321892+3: small factors 3, 23, 941, 165317, ...
239378138685*2^3321892-1: small factors 19, 37, 71, 192923, ...

These were not considered by your sieve. That is Sophie Germain and "AP3 from 3".

/JeppeSN

Profile robishProject donor
Volunteer moderator
Volunteer tester
Avatar
Send message
Joined: 7 Jan 12
Posts: 1992
ID: 126266
Credit: 5,861,834,385
RAC: 2,572,975
Discovered the World's First AP27!!!Discovered 9 mega primesDiscovered 1 AP272018 Tour de Primes largest primeFound 4 primes in the 2018 Tour de PrimesFound 1 mega prime in the 2018 Tour de PrimesFound 1 prime in the 2019 Tour de PrimesFound 1 prime in the 2020 Tour de PrimesFound 1 prime in the 2021 Tour de Primes321 LLR Turquoise: Earned 5,000,000 credits (9,681,253)Cullen LLR Sapphire: Earned 20,000,000 credits (46,627,058)ESP LLR Turquoise: Earned 5,000,000 credits (8,577,288)Generalized Cullen/Woodall LLR Turquoise: Earned 5,000,000 credits (9,950,938)PPS LLR Emerald: Earned 50,000,000 credits (81,462,474)PSP LLR Turquoise: Earned 5,000,000 credits (9,600,575)SoB LLR Sapphire: Earned 20,000,000 credits (36,846,875)SR5 LLR Turquoise: Earned 5,000,000 credits (9,986,029)SGS LLR Turquoise: Earned 5,000,000 credits (5,658,541)TRP LLR Sapphire: Earned 20,000,000 credits (28,889,840)Woodall LLR Turquoise: Earned 5,000,000 credits (5,062,771)321 Sieve (suspended) Turquoise: Earned 5,000,000 credits (7,141,753)Cullen/Woodall Sieve (suspended) Turquoise: Earned 5,000,000 credits (7,892,369)Generalized Cullen/Woodall Sieve (suspended) Turquoise: Earned 5,000,000 credits (5,515,338)PPS Sieve Double Gold: Earned 500,000,000 credits (842,736,516)TRP Sieve (suspended) Silver: Earned 100,000 credits (121,416)AP 26/27 Emerald: Earned 50,000,000 credits (93,931,019)GFN Double Ruby: Earned 2,000,000,000 credits (4,556,256,999)WW Emerald: Earned 50,000,000 credits (96,052,000)
Message 149000 - Posted: 24 Feb 2021 | 19:57:39 UTC - in response to Message 148999.
Last modified: 24 Feb 2021 | 19:59:09 UTC

I believe so yes, it's called "lucky" in Newpgen, This Plus side I found quickly, Minus is taking forever ;)

Only 42500 left :P
____________
My lucky numbers 10590941048576+1 and 224584605939537911+81292139*23#*n for n=0..26

Post to thread

Message boards : Sophie Germain Prime Search : max k sieved for n = 1290000?

[Return to PrimeGrid main page]
DNS Powered by DNSEXIT.COM
Copyright © 2005 - 2021 Rytis Slatkevičius (contact) and PrimeGrid community. Server load 1.77, 2.01, 1.66
Generated 17 Sep 2021 | 20:07:12 UTC